- Flickr Creative Commons - http://www.flickr.com/creativecommons/
- CompFight - http://compfight.com/
- Pics4Learning - http://pics4learning.com/
- Open Clip Art - http://openclipart.org/
- School Clip Art - http://www.school-clip-art.com/
- MorgueFile - http://morguefile.com/
- ViewAt World in panoramic - http://viewat.org/
- SmartHistory - http://smarthistory.org/
- LIFE images - http://images.google.com/hosted/life
- Public Domain Photos - specific search engines - http://www.publicdomainsherpa.com/public-domain-photographs.html